BM Premium 420mm Lens 420-800mm
BM Premium
46 Overall Score
vs
Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds
Panasonic
88 Overall Score
What Buyers Say
BM Premium 420mm Lens 420-800mm
35 out of 100 low confidence 7 reviews
The lens receives mixed feedback: some users praise its value for money and image quality for certain uses like architecture, but many report serious issues including incompatibility with Canon EOS R8, poor image quality, flimsy plastic build, and slow autofocus unsuitable for wildlife. The need for a tripod due to bulkiness and manual focus annoyance are also noted.
Pros
- Good value for money
- Decent image quality for architecture
- Pleasant for certain projects
Cons
- Incompatible with Canon EOS R8
- Poor image quality
- Flimsy plastic zoom mechanism
- Slow autofocus for wildlife
- Bulky requiring tripod
Image quality 4
Build quality 2
Compatibility 1
Autofocus performance 2
Value for money 2
Portability 1
Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds
No customer feedback yet
Scores
Macro
Budget
Video Cinema
Portrait
Street
Landscape
Professional
Wildlife Sports
Travel
Specifications
| BM Premium 420mm Lens 420-800mm | Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds | |
|---|---|---|
| Optics | ||
| Type | telephoto | zoom |
| Focal Length Min | 420 mm | 14 mm |
| Focal Length Max | 1600 mm | 140 mm |
| Elements | — | 16 |
| Groups | — | 13 |
| Aspherical Elements | — | 4★ |
| ED Elements | — | 2★ |
| Coating | multi-coated | multi-coated |
| Aperture | ||
| Max Aperture | f/8.3 | f/4 |
| Min Aperture | f/8.3 | 4.0-5.8 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | — | 7★ |
| Build | ||
| Mount | Canon RF | Micro Four Thirds |
| Format | — | micro-four-thirds |
| Weight | 1.14 kg★ | — |
| Filter Thread | 62 mm | 62 mm |
| AF & Stabilization | ||
| AF Type | manual focus only | inner focus direct-drive linear motor★ |
| Stabilization | ✓ | ✓ |
| Focus | ||
| Min Focus Distance | 420 mm | 62 mm★ |
Pros & Cons
BM Premium 420mm Lens 420-800mm
- Strong versatility (86th percentile)86th %ile
- Strong stabilization (79th percentile)
- Below average user sentiment (1st percentile)1st %ile
- Below average build (14th percentile)14th %ile
- Below average af (15th percentile)15th %ile
Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds
- Strong af (98th percentile)98th %ile
- Strong versatility (97th percentile)97th %ile
- Strong optical (95th percentile)95th %ile
- Strong macro (95th percentile)95th %ile
Pricing
BM Premium 420mm Lens 420-800mm0.326score per dollar
vs
Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds0.147score per dollar
BM Premium 420mm Lens 420-800mm offers 2.2x better value for money
Verdict
Winner: Panasonic Lumix G 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds
Scores 88 overall, wins 9 of 9 usage categories and 5 of 19 specs.
